真空泵不吸气或气量不足的原因（） A.没有注水或水少 B.有漏气现象 C.注水温度低

Do you have any of these bad habits ? Check yourself by answering  “yes”or“no” to these questions.

a)      Do you move your lips when reading silently ?

b)     Do you point to words with your fingers as you read ?

c)      Do you move your head from side to side as you read ?

d)     Do you read one word at a time ?

If your answer “yes”  to any of these questions , start at once to break the habits. If you move your lips, hold your fingers over them, or hold a piece of paper between your lips while you are reading. Then when your lips move, you will know it and stop them. If you point to words, hold the two sides of your book, one side with your left hand, the other side with your right hand. Then you won’t have a free finger to use in pointing while reading. If you move your head, place your chin in one hand, and hold your head still.

If you read no more than one word at a time, you need to work in learning to take in more words at each glance as your eyes travel across the lines of words. Even if you read fairly fast now, you can learn to even faster. As you probably have been told, the secret of fast reading is to take in whole groups of words at each glance. Read in several groups and force your eyes along the lines of words as fast as you can make them go. Anyone who practices doing these two things will be able to read faster.                                       

56. What do you think of those habits talked about in the text _________.

A. we should remember those habits

B. they should be got rid of

C. they are difficult to get rid of

D. they are good for our studies

57. You may hold your finger over your lips while reading so as to __________.

A. hold a piece of paper between your lips

B. keep yourself from talking to others

C. tell others to be silent

D. feel whether your lips move or not

58. When your eyes travel across the lines of words, you need to __________.

A. read the words out       

B. look at every word carefully

C. read several words at a time

D. remember every word

59. If you can read fairly fast now, __________.

A. you don’t need to learn to read faster

B. you can go on reading like that

C. you can learn to read even faster

D. you can enjoy reading

5987×83-5988×82=( )

A．5987

B．5989

C．5905

D．5925

涂鸦线指年龄在1―6岁左右的儿童用笔在纸上涂划，画出一些乱而不规则的线条，包括有直线、斜线、弧线、折线等。

投保人转账缴纳保费时，必须保证保费资金从投保人汇出账户直接转账至公司银行账户。严禁保费资金在任何第三方账户流转，严禁公司任何人员在客户转账缴纳保费时以任何借口使用个人或其他账户先汇集收取转账缴纳保费，再集中转入公司银行账户。

某市一栋综合楼，地下共4层，地上共20层，采用框架剪力墙结构，总建筑面积30万m²，主楼与其裙房之间设有防火墙等防火分隔设施，主楼各层建筑面积均大于1000m²。该综合楼总平面布局及周边民用建筑等相关信息如图1所示。该综合楼地下3、4层均为人防层，其主要使用功能均为普通汽车库、复式汽车库和储存可燃固体的库房；地下2层主要使用功能为展览厅、管理用房及燃气锅炉房、柴油发电机房、变压器室、配电室、消防泵房等设备用房；地下1层主要使用功能为消防控制室、管理用房及商场营业厅。主楼首层主要使用功能为门厅、咖啡厅、自助餐厅、商场营业厅，地上2、3层主要使用功能为儿童游乐厅、展览厅、商场营业厅，地上4～19层主要使用功能为办公室，地上20层主要使用功能为会议厅、多功能厅。裙房1～6层主要使用功能为商场营业厅。该建筑按有关国家工程建设消防技术标准配置了室内外消火栓给水系统、自动喷水灭火系统和火灾自动报警系统等消防设施及器材。

根据以上场景，回答下列问题。

消防水泵的启动方式分为哪几种？